Changes to the Mega Millions lottery will make it more likely that players will win something, but less likely to win the top jackpot.

Beginning Oct. 22, the minimum jackpot will increase from $12 million to $15 million, and jackpots will grow by at least $5 million after each drawing in which the jackpot is not won.

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Mega Millions drawings will still consist of five white balls and one Mega Ball, for a total of six winning numbers. Under a new matrix, the number of white balls will increase to 75 and the number of Mega Balls will decrease to 15.

The result will be overall odds of 1 in 15 to win any prize. The current system gives players a 1 in 40 chance of winning a prize.

Other changes include a new prize structure, including the second prize increasing from $250,000 to $1 million for matching the first five numbers, and a change in the Megaplier option which will enable a player to win up to $5 million without matching all six numbers.

Under the new matrix, the odds of hitting the jackpot will be 1 in 259 million, worse than the current 1 in 175.7 million odds.

The changes will not include a price increase for the $1 tickets. Powerball tickets have been $2 since their last big change.